


Dwyer Instruments 1221-M300-W/M | U-tube manometer | Range 150-0-150 mm w.c.
Dwyer® Flex-Tube® U-Tube Manometers combine the robust, long-lasting plastic construction with the inherent precision of the straightforward "U" Tube. Positive, negative, and differential pressures are all measured by these affordable manometers. The flexible, shatter-proof,.375" O.D. transparent butyrate tubing used in the columns is clear. For cleaning, they are easily accessible. White scale channel surrounds the indicator tube to maximize color contrast. High impact polystyrene plastic is extruded to make scales, which are designed to retain columns precisely aligned. For optimal legibility, numbers and graduations on stark white scales are silkscreened in black.

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- Specifications
- Features
- Downloads
Fluid | 7.9 oz. Water or Mercury |
PRESSURE | Max: 100 psi |
Range | 150-0-150 mm w.c. |
Sensor Type | Flex Tube |
Series | Family: Dwyer Instruments Sensors |
Type | U-Tube Manometer |
- Our most affordable, basic U-gage. a trustworthy U-tube manometer with good visibility and durability that yields precise readings.
- For use with red gage fluid, mercury, or water. Dwyer® Part No. A-363, a scale clamp bar (standard on Series 1222 and available as an additional for Series 1221), is advised for mercury-filled manometers.
- Each manometer comes with a set of vinyl tube connectors that don't kink and a pair of carrying plugs.
- Static pressure in ducts.
- Laboratories for calibration.
- Monitoring of filters.
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